Exposure to an 890-MHz mobile phone-like signal and serum levels of S100B and transthyretin in volunteers
Söderqvist F, Carlberg M, Hansson Mild K, Hardell L · 2009
View Original AbstractExposure to a GSM 890 MHz signal did not significantly raise S100B levels, but transthyretin showed a statistically significant increase at 60 min after exposure ended.
Plain English Summary
Researchers exposed 41 volunteers to a 30 min GSM 890 MHz signal at an average specific energy absorption rate distribution of 1.0 W/kg in the temporal area of the head. S100B showed no statistically significant increase, while transthyretin showed a statistically significant increase in the final blood sample 60 min after the end of the provocation compared to the sample taken immediately after provocation (p = 0.02). The researchers noted that the clinical significance of this finding, if any, is unknown.
Why This Matters
The study aimed to test whether exposure to a mobile phone-like signal alters the integrity of the human blood-brain and blood-cerebrospinal fluid barriers. Blood samples were taken repeatedly before and after the provocation to track any changes in serum marker levels. The transthyretin increase was observed specifically when comparing the final sample, taken 60 min after the end of the provocation, to the sample taken immediately after provocation. The researchers called for further randomized studies with use of additional more brain specific markers.
Exposure Details
- SAR
- 1 W/kg
- Source/Device
- GSM 890 MHz
- Exposure Duration
- 30 min
Exposure Context
This study used 1 W/kg for SAR (device absorption):
- 2.5x above the Building Biology guideline of 0.4 W/kg
Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.
Where This Falls on the Concern Scale
Study Details
The aim of this study was to test, using peripheral markers, whether exposure to a mobile phone-like signal alters the integrity of the human blood-brain and blood-cerebrospinal fluid barriers.
A provocation study was carried out that exposed 41 volunteers to a 30 min GSM 890 MHz signal with a...
Repeated blood sampling before and after the provocation showed no statistically significant increa...
The clinical significance of this finding, if any, is unknown. Further randomized studies with use of additional more brain specific markers are needed.
Show BibTeX
@article{f_2009_exposure_to_an_890mhz_187,
author = {Söderqvist F and Carlberg M and Hansson Mild K and Hardell L},
title = {Exposure to an 890-MHz mobile phone-like signal and serum levels of S100B and transthyretin in volunteers},
year = {2009},
url = {https://www.sciencedirect.com/science/article/abs/pii/S037842740900246X},
}